Abstract: A laminate material or workpiece with a backing layer and a functional layer, in particular a friction bearing layer, with the structure of a solid but fusible dispersion with a matrix and at least one component which is dispersed in the matrix and which at least in the solid condition is insoluble in the material of the matrix or is soluble only in an amount which is smaller than the amount present, or with the structure of a substantially fusible mixture which is fixedly combined in itself and which can be used for tribological purposes, of components which are not soluble in each other or which are soluble only in an amount which is smaller than the amount present, possibly partially in crystal-like form, is transformed at the exposed surface of the functional layer into another structure in respect of the dispersion alloy or the mixture by melting and extremely rapid cooling from the molten condition, so that fine globular distribution of the undissolved components occurs and the material of the surface r

Abstract: The lance holder for an oxygen lance has a substantially increased reliability and safety, since a valve disk slidable against the force of a valve disk spring by insertion of the lance is provided in a retaining body between the slag run back safety device and a gripping head. This valve disk is forced from the valve seat on insertion of the lance so that the refinery gas can pass through the lance holder without more. If through some error the lance is released, i.e. by slipping out from the holder, the valve disk automatically closes so that the oxygen gas provided can not flow through. A contact of the oxygen-supply hose with the lance holder attached to it is thus reliably prevented. At the same time the slag run back safety device and the clamping head are formed so that a very compact lance holder results.